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WANG Chungui, ZHAO Yunqiang, DONG Chunlin, DENG Jun. Analysis on microstructure and mechanical properties of 6063-T6 self-reacting friction stir welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(10): 108-112. DOI: 10.12073/j.hjxb.2018390258
Citation: WANG Chungui, ZHAO Yunqiang, DONG Chunlin, DENG Jun. Analysis on microstructure and mechanical properties of 6063-T6 self-reacting friction stir welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(10): 108-112. DOI: 10.12073/j.hjxb.2018390258
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Analysis on microstructure and mechanical properties of 6063-T6 self-reacting friction stir welding

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  • Received Date: March 26, 2018
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    • Abstract
  • Self-reacting friction stir welding experiments for 4 mm thick 6063-T6 aluminum alloy were carried out in this study. The results indicated that good surface appearance and inner defect-free joints could be obtained. The joint macro morphologies were dumbbell shaped and the joint could be divided into four microstructure zones i.e. base material zone, heat affecting zone, thermal-mechanical affect zone and weld nugget zone. The hardness distribution of all the joints were W-shaped. When the rotation speed was 1 200 r/min and the welding speeds were 400~700 mm/min, the tensile strength of the joint first increased and then decreased. The tensile strength of the optimized joint was 181.64 MPa which equaled 68.5% of that of the base material. All the failed joints fractured in the heat-affected zone at the forward side with a ductile fracture mode.
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    • References (8)
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